Flange Fastener Flange Coupler Light Intelligent Robot For Equipment Engineering Feature:1. The shaft holder is designed to reduce weight to reduce unnecessary rotating mass and is lightweight.2. Weight and volume are balanced. In high-speed applications, it can effectively avoid centrifugal force and vibration caused by unbalanced mass and volume.3. There are 6 x M4 threaded holes with 8mm pitch in the 16mm grid, and the threaded holes provide great installation flexibility.4. Made of high-quality aluminum alloy, light weight, good toughness, good corrosion resistance and durable.5. Wide range of applications, can be used in intelligent robots, engineering and hardware, etc. Specification:Item Type: Flange CouplingMaterial: Aluminum Alloy Model Size: Model Bore Size 3308-0016-0004 4mm 3308-0016-0005 5mm 3308-0016-0006 6mm Package List:2 x Flange Couplings Note: Please match the suitable size of your project before installation and use. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.